The PW Guidewires are intended to facilitate placement of balloon dilatation catheters or other intravascular devices during percutaneous transluminal coronary angioplasty (PCTA) and percutaneous transluminal angioplasty (PTA). The PW Guidewires are not to be used in cerebral blood vessels.
Device Story
Steerable guidewire used to facilitate placement of balloon dilatation catheters or other intravascular devices in coronary and peripheral vasculature; excludes cerebral vessels. Device consists of stainless steel solid core wire, 0.014" diameter, 180cm length; features distal radiopaque coil, hydrophilic distal coating, and PTFE proximal coating. Operated by physicians in clinical settings (e.g., cath lab) during interventional procedures. Physician manually manipulates wire to navigate vasculature; provides track for catheter delivery. Benefits include improved access to target lesion sites for angioplasty. No electronic or software components.
Clinical Evidence
Bench testing only. Testing included tensile strength, torque strength, torqueability, tip flexibility, tip load, coating adhesion, simulated use, resistance to wire fracture, dimensional verification, catheter compatibility, and radiopacity testing. Biocompatibility evaluated per ISO 10993-1. All tests met acceptance criteria.
Technological Characteristics
Stainless steel solid core wire; 0.014" (0.36mm) nominal diameter; 180cm length. Distal radiopaque coil; hydrophilic distal coating; PTFE proximal coating. Sterilized via Ethylene Oxide to SAL 10^-6. Mechanical device; no energy source or software.
Indications for Use
Indicated for patients undergoing percutaneous transluminal coronary angioplasty (PTCA) or percutaneous transluminal angioplasty (PTA) requiring placement of balloon dilatation catheters or other intravascular devices. Contraindicated for use in cerebral blood vessels.
Regulatory Classification
Identification
A catheter guide wire is a coiled wire that is designed to fit inside a percutaneous catheter for the purpose of directing the catheter through a blood vessel.
Special Controls
*Classification.* Class II (special controls). The device, when it is a torque device that is manually operated, non-patient contacting, and intended to manipulate non-cerebral vascular guide wires, is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 870.9.
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Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
January 22, 2016
Tatara Vascular, LLC % Jill Munsinger Regulatory Consultant JMCS. LLC 11470 Kenyon Ct. NE Blaine, Minnesota 55449
Re: K152497
Trade/Device Name: PW Guidewires Regulation Number: 21 CFR 870.1330 Regulation Name: Catheter Guide Wire Regulatory Class: Class II Product Code: DQX Dated: December 15, 2015 Received: December 18, 2015
Dear Jill Munsinger:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food. Drug. and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting of medical devicerelated adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in
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the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to
http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely yours,
Kenneth J. Cavanaugh -S
for
Bram D. Zuckerman, M.D. Director Division of Cardiovascular Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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510(k) Number: K152497
Device Name: PW Guidewires
## Indications For Use:
The PW Guidewires are intended to facilitate placement of balloon dilatation catheters or other intravascular devices during percutaneous transluminal coronary angioplasty (PCTA) and percutaneous transluminal angioplasty (PTA). The PW Guidewires are not to be used in cerebral blood vessels.
Prescription Use X (Part 21 CFR 801 Subpart D) AND/OR
Over-The-Counter Use (21 CFR 807 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Page 1 of 1
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K152497
This 510(k) summary is submitted in accordance with the requirements of SMDA 1990 and 21 CFR 807.92.
510(k) Number: K152497
### Applicant Information:
| Date Prepared: | January 20, 2016 |
|---------------------------|-------------------------------------------------|
| 510(k) Owner: | Tatara Vascular, LLC |
| Address: | 10000 Cedar Ave. GCIC-10<br>Cleveland, OH 44106 |
| Facsimile Number: | (216) 445-6514 |
| Regulatory Correspondent: | Jill Munsinger |
| Phone Number: | 651-270-0572 |
| E-mail: | jill.munsinger@outlook.com |
#### Device Information:
| Classification: | Class II Percutaneous Guidewire |
|----------------------|---------------------------------|
| Trade Name: | PW Guidewires |
| Common Name: | Percutaneous Guidewire |
| Classification Name: | Percutaneous Guidewire |
### Predicate Devices:
The Tatara Vascular, LLC PW Guidewire is substantially equivalent in intended use, method of operation and technical aspects to the following predicate devices:
K041531 - Asahi Confianza Pro Guidewire K052339 - Asahi MiracleBros Guidewire
### Device Description:
The Tatara Vascular, LLC PW Guidewires are steerable guidewires with a maximum diameter of 0.014" (0.36mm) and nominal length of 180cm. The wires are constructed from a stainless steel solid core wire with two grind profiles that distinguish the gram stiffness of the wire. The core wire transitions to an angled tip of either 0.30mm or 0.75 mm in length. The distal end of the guidewires have a radiopaque coil. A hydrophilic coating is applied to the distal portion of the guidewires. The proximal portion of the guidewires is coated with polytetrafluoroethylene (PTFE).
### Intended Use:
The PW Guidewires are intended to facilitate placement of balloon dilatation catheters or other intravascular devices during percutaneous transluminal coronary angioplasty (PTCA) and percutaneous transluminal angioplasty (PTA). The PW Guidewires are not to be used in cerebral blood vessels.
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# Comparison to Predicate Device(s):
Comparison of the Tatara Vascular, LLC PW Guidewires and predicate devices show that the technological characteristics (indications, components, design, materials, sterilization method, and operating principles) of the PW Guidewires are identical or similar to the currently marketed predicate devices. The following table outlines the comparison of the PW Guidewires to the predicate devices.
| Characteristic | PW Guidewires | Asahi Confianza Pro | Asahi MiracleBros |
|---------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------|-----------------------|
| 510(k) Number | TBD | K041531 | K052339 |
| Indications for Use | ...to facilitate<br>placement of balloon<br>dilatation catheters or<br>other intravascular<br>devices during<br>percutaneous<br>transluminal coronary<br>angioplasty (PTCA)<br>and percutaneous<br>transluminal<br>angioplasty (PTA).<br>The PW Guidewires<br>are not to be used in<br>cerebral blood<br>vessels. | Same | Same |
| Sterilization | Ethylene Oxide to<br>SAL 10-6 | Same | Same |
| Target Body Location | Coronary and<br>peripheral<br>vasculature. Not<br>cerebral vasculature. | Same | Same |
| Core Wire Material | Stainless steel | Same | Same |
| Nominal Outer<br>Diameter | 0.014" (0.36mm) | Same | Same |
| Overall length | 180 cm | 180 cm and 300 cm | 180 cm and 300 cm |
| Proximal Coating | PTFE | Same | Same |
| Distal Coating | Hydrophilic | Same | Hydrophobic |
| Tip Load | 5g, 12g | 9.3g, 12.4g | 3.9g, 4.4g, 8.8g, 13g |
| Tip Radiopacity | 2.5cm | 20cm | 11cm |
| Tip Outer Diameter | 0.26mm | 0.23mm | 0.36mm |
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Non-clinical laboratory testing was performed on the Tascular, LLC Pwditional S10(k)
Non-clinical laboratory testing was performed on the Tatara Vascular, LLC PW Guidewires t demonstrate the device would perform as intended. The following tests and assessments were performed:
- Tensile Strength
- Torque Strength
- Torqueability
- Tip Flexibility
- Tip Load
- Coating Adhesion
- Simulated Use ●
- Resistance to Wire Fracture
- Dimensional Verification
- Catheter Compatibility ●
- Radiopacity Testing ●
The in vitro bench tests demonstrated that the Tatara Vascular, LLC PW Guidewires met the required acceptance criteria and performed in a similar manner to the predicate devices. Performance data demonstrate that the device will function as intended and has an equivalent performance profile as the predicate devices.
Biocompatibility tests were also conducted to demonstrate the materials of the Tatara Vascular, LLC PW Guidewires were suitable for human use. The materials necessary to construct the PW Guidewires are similar to the predicate devices and were evaluated in accordance with ISO 10993-1. The results of the biocompatibility evaluations demonstrated the materials of the PW Guidewires are suitable for their intended use.
### Summary:
Based upon the intended use, descriptive information, and performance evaluation provided in this pre-market notification, the Tatara Vascular, LLC PW Guidewires have been shown to be substantially equivalent to currently marketed predicate devices.
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Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
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Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
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Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
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Reading rule for every project: how many summaries do you read in full?
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Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
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What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
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Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.